Publication Date:
2001-11-01
Description:
The continuation of a system, activity, or lifeline after an earthquake may depend on one or all of several critical facilities at different sites remaining operational. Hence the joint hazard of strong shaking at two or more locations in the same earthquake is of much interest. Taking account of uncertainties, we derive estimates for the probability that strong shaking will exceed stated thresholds jointly at two or more sites in an earthquake of given source location and magnitude. The method is extended to estimation of the joint hazard at two or more sites when potential sources are distributed in location and magnitude. Examples show that the ratio between the joint and individual hazards can vary widely. The ratio depends on the relative sizes of the between-earthquake and within-earthquake components of variability, and on the number of earthquake sources contributing to the hazard.
Print ISSN:
8755-2930
Electronic ISSN:
1944-8201
Topics:
Architecture, Civil Engineering, Surveying
,
Geosciences
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